My daughter will not let me see my granddaughter because of a conflict between her, her boyfriend and my famil?

I need to know how I go about getting visitation with my granddaughter. I cannot afford an attorney. I just miss my grandbaby and want to see her again. It has been 4 months and I miss her like crazy. This all started because the boyfriend was afraid he was going to get beat up so he thought he would hit where it hurt the most and that is by keeping our granddaughter away from us. I really miss her. We use to have her every weekend but now we don't get to see her at all. All answers are greatly appreciated.